Piston type differential pressure gauge for rate of flow indicators



March 25, 1952 McKlNLEY TAYLOR 2,590,583

PISTON TYPE, DIFFERENTIAL PRESSURE GAUGE FOR RATE OF FLOW INDICATORS Filed Jan. 25, 1949 2 $HEETS-SHEET 1 Y INVENTO-R. I WZCZfkZ? 721702",

A'ITD RN EYS March 25, 1952 Mo y TAYLOR 2,590,583

' PISTON TYPE, DIFFERENTIAL PRESSURE GAUGE FOR RATE OF FLOW INDICATORS. Filed Jan. 25, 1949 2 SHEETSSHEET 2' HT N ATTO R N EYS Patented Mar. 25, 1952 UNITED STATES PAT T OFFICE PISTON TYPE DIFFERENTIAL PRESSURE GAUGE FOR RATE OF FLOWINDICATORS 1 Claim.

This invention relates to an indicator, and more particularly to a device for indicating the rate of flow of crude oil from a producing well.

The object of the invention is to provide a device which will accurately indicate the amount of crude oil flowing from a producing well, the indicating device of the present invention enabling the operator to accurately control the amount of crude oil flowing from a well.

Another object of the invention is to provide a rate of flow indicator which is extremely simple and'inexpensive to manufacture.

Other objects of the invention will become apparent as the description proceeds and when taken in conjunction with the drawings in which:

Figure 1 is an elevational view of the rate of flow indicator, according to the present invention; I

Figure 2 is a central longitudinal sectional view of the cylinder and plunger;

Figure 3 is a sectional view taken on the line 3-3 of Figure 2;

Figure 4 is a central longitudinal sectional view of the stop valve; and

Figure 5 is a sectional view taken on the line 5--5 of Figure 2.

Referring in detail to the drawings, the numeral l8 designates a portion of a line for conveying crude oil from a producing well. Interposed in the line or pipe i8 is a manually controlled valve II for varying the quantity of oil flowing therethrough. A valve mechanism 1 is threadably connected to the end of the pipe Ill and to a second pipe or conduit l 3. The valve l, Figures 1 and 4, embodies a housing 9 provided with a, rotatable core l4 therein. The core has a projecting square shank l5 for rotating the core Hi. The core I4 is bored as at l8 and is also provided with a threaded bore H for receiving an exteriorly threaded jet member I8. The jet member is apertured as at H] and the size of the aperture l9 may be varied by disassembling the valve 1 and inserting a jet member having the desired sized aperture. The core M is also provided with a threaded end 28, there being a washer 2i and nut 22 circumposed on the end 28 for maintaining the parts of the valve in assembled relation.

Arranged in spaced relation with respect to the pipes l8 and 43 is a cylinder l2 having its opposite ends threaded interiorly as at 24 for receiving therein plugs 5 and 8. A conduit 28 has one end connected to the pipe 58 and its other end connected to a T-fitting 21 and leading from the fitting 21 is a pair of tubular sections 28 and 29. The tubular section 28 is provided with a union 3!), elbow 3|, manually operable gate valve 32, elbow 33, and a check valve 34, and finally the tubular section 28 terminates in a T-fitting which is connected to a conduit 36 that is in communication with one end of the cylinder l2. The tubular section 29 extends from the other side of the T-fitting 21 and is provided with an elbow 4, manually operable gate valve 37, union 38, and finally the tubular section terminates in the T-fitting 35, and these tubular sections .are for a purpose to be later described. The other end of the cylinder I2 is connected by a conduit 39 to the pipe l3, Figure 1.

Arranged in communication with the interior of the cylinder I2 is a gauge 40 for indicating pressure in the cylinder.

Slidably arranged in the cylinder I2 is a piston or plunger 4| having one end 42 of a reduced diameter, Figure 2, and this end abuts a nose 43 which projects from the closure plug 5 to limit movement of the plug 4| towards the plunger 5. A coil spring 44 is arranged in the cylinder l2 and. is circumposed on the end 42 and on the nose 43 for normally urging the plunger 4: away from the plug 5.

The plunger 4! is milled for a portion of its length to define gear teeth 45 which are arranged in meshing engagement with a gear 46 that is rotata'bly positioned in a housing 41 which is formed integral with the cylinder l2 intermediate its ends. The gear 46 is secured to an end of a rotatable shaft 48, Figures 2 and 3. The shaft 48 projects into a closure cap 49 which is arranged in threaded engagement with one end of the housing 41 and the shaft 48 is supported by a bearing block 50. A circular dial 5| is threaded on a portion of the block 50 and releasably secured thereto by a set screw 54. The dial 5| is provided with markings 52 thereon to indicate the rate of flow of oil through the pipes l8 and I3. Suitable packing 53 is arranged around the shaft 48 and a packing gland nut 55 holds the packing 53 in place. Secured to the projecting end of the shaft 48 by a nut 56 is a hand 51 for coacting with markings 52 on the dial 5! to indicate the rate of flow.

In use, crude oil flows from a producing well through the pipe [0, the valve ll providing a means for adjusting the flow of oil therethrough. The gate valve 31 is first opened so that oil will flow through the tubular section 28 and into the cylinder l2 to thereby move the plunger 4|. Thi movement causes the shaft 48 to rotate so that the hand 51 will move to indicate the rate of flow of oil from the well. The dial 5| is preferably calibrated to read in barrels of oil per twenty-four hours: The pressure gauge 40 provides a pressure reading for the operator. The oil flowing through the pipe passes through the aperture 19 in the valve 1 and out through the pipe [3 to the locality desired. The tubular section 28 is used as follows: After the valve 31 :is opened, the gate valve 32 is then opened, and the gate valve 31 is then closed so that there will be less fluctuation of the dial hand 51, since the check valve 34 is arranged in the tubular section 28. until the valve II has been adjusted in order to get the desired flow of oil, and the gate valve 32 may then be closed, and only opened as needed. The check valve 34 is conventional and fluid flows from left to right, Figure 1, through the check valve 34.

From the foregoing, it is apparent that a device has been provided which will indicate the true amount of oil flowing from wells, and which will enable the operator to accurately control the flow of oil from the producing well.

While I have shown and described a preferred form of the device, this is by Way of illustration only and I consider as my own all such modifications in construction as fairly fall within the scope of the appended claim.

What I claim is:

An indicating device comprising a cylinder, the opposite ends of said cylinder being threaded interiorly, a plug arranged in threaded engagement with each end of said cylinder, a nose projecting inwardly from one of said plugs, a

The gate valve 32 need only be kept openplunger slidably arranged in said cylinder and having one end of reduced diameter for engagement with said nose, a coil spring circumposed on the reduced end of said plunger and on said nose. a plurality of gear teeth arranged on said plunger, a housing arranged intermediate the ends of said cylinder and projecting therefrom, and a gear rotatably positioned in said housing and meshing with said gear teeth for operating an indicator, said cylinder being provided with means at either end, on opposite sides of the plunger, for transmitting fluid pressure thereto.

MCKINLEY TAYLOR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,068,280 Simpson et a1. July 22, 1913 1,107,293 Haas Aug. 18, 1914 1,454,222 Palmer et a1 May 8, 1923 1,682,602 Dawley Aug. 28, 1928 1,943,993 Stewart et a1. Jan. 16, 1934 1,995,490 Wilkinson Mar. 26, 1935 2,210,081 Humphrey Aug. 6, 1940 2,449,556 Kirkley Sept. 21, 1948 FOREIGN PATENTS Number Country Date 506,915 France June 9, 1920 555,278 France Mar. 19, 1923 

